Electrically-operated water-heater for automobile-radiators.



E. M. ROSENBLUTH. ELEQTRICALLY OPERATED WATER HEATER FOR AUTOMOBILE RADIATORS.

APPLICATION FILED IAN.2, 19I5.

1,155,098. Patented Sept 28, 1915.

2 SHEETS-SHEET I.

5 8 .[(i I. (if

O O 25 I 2' .51 3 16' WITNE SES: INVENTOR:

E. M. ROSENBLUTH.

ELECTRiCALLY OPERATED WATER HEATER FOR AUTOMOBILE RADIATORS.

APPLICATION FILED JAN. 2, 1915.

1 l 55.,OQ3'3 Patented Sept. 28, 1915.

2 SHEETS-SHEET 2.

\JViTNESSES:

INVEQI TZRLZ:

iivr

" ?F"-llyfinvention relates to-heater's of the class b-li emplated in LettersPatent of the United tes #774,556, granted November 8,1904 'b'fwhih I am the assignee, to Wit, asheater causing a; circulation of warm or hot W e'r "t l1ro1igh"the Water circulating System w d ned to'coolan internal combustion inof' a sel'ffpropelled vehicle; such heater being} indepeiident'of said motor and em- 20 ployedto prevent freezing of the water in their-a systernwhen' the latter is exposed to ii'nt'ei" te'mperatiires. j f

s" hereinafter described, my. invention includes an electric, heating unit having flexi- 25 ble' c ohductors with a terminalplugadapted to 'fit" any ordinary incandescent lai'np I Y "ocketor similar electric receptacle for con nection, an energizing circuit; said lieatenbeing inclosedfin a 'casingwhich is @conduc'tive of heat; said water chamber ha vingfiexible inlet and outlet t'ubes adaptfor detachable l'coi1n1; ction"with an automobil radiator';saidinlet tube being adapted for'ronnection with the ordinary drip cook the bottom of theradiator, and said outlet tube having a" hoolrg shaped nozle adapted to hang in the wateixiinlet tube at th of, said radiator; the-arrangement gifsuchthat water is received in sa d ate hamber of the heater froin the bt- "of'the radiator; heated in said chamber discharged through' s'aid' hooknozle into top df the ra diator; said nozle having bl'efljmechanical connectors extending to ieater' to support: the latter without st n upon said fiexibliefwat er outlet tubfe.

invention includes the various novel V. r;- H, y me 1 eradiatorwith a convenlen nent'of my inventiona'pplied v w H y tll fifi .-v Fig. II is a verticalsect onal view win "f n ,tl ee'slieireia Fi eticmmittibm'a tmn WATER-HEATER .i'io'it A'UIO1V10BILE i Specification ofLetters Pa'tent Pgttented s pfifls o applicationnled January 2,:1 9 15. Serial I l My of said heater the'drip cock H r I Referring to FigsJII and III; the elec-, 'tric heating unit conveniently comprises a cits scale. Fig. III isia transverse sectional view taken on the line III,III in EigII. I I Referring to Fig. I; the automobile radiator 1 may be of any suitable construction,

connect ed with the water circulating system of the vehicle motor by the pipes 2 and 3. and

having the water inlet tube 5, at itstop and (i at its bottofn;

double coil of flat resistance wire 8. wrapped upon and inclosed by sheets of mica or other suitable insiilating material 9 and held between the segmental cylindriforin bar s/1 0 in the casing llwhich is connectedrby' 'the screwthread 12 with thetubular. shank 13 through which extend. the Hat nietal strip conductors :14 which are insulated the ,sheet'of mica 15 and. in connectionwith the- 'terininals 16 in the socket l7 which is adapted to receive the removable plug 18 having respective sockets 20 arranged to detachably fengage said terminals l6vhen said-plug 18 isfth'rust into said socket 17. .as shown inv )Fig. II; Said sockets 20 are electrically connected with the flexible conductors-21 leading to the screwplug which may be of any suitable lco nstructionto fitflan ordinary, incandescent'lanip socket or similar re:

ceptacle in connection with I a circuit gincluding a source of QlBCtIflClQfbY.Whl Cll. sa d re- 'sista'nce'coils.of jvire :8 maybe raised to any desired temperature.

casing lief-{the electric heating unit above described, is inclosedin the waterclianiberfl having the water inlet tube 2 5 at thefbottoni thereof and the i Wateroutlet tube 26, at the top thereof, extending through and in rigidrelation with the'casing 28 fwhiclris designed to be non-conductive oflieat and includes the outer shell 29 of perforated sheet inetalhay- ,ingthe outer caps 30 and 31 respectively at the topfand bottom thereof and the inner flanged heads 32and 31, respectively at the topv andibotto n of said casing '2 8,. in spaced relationwitlrsaid; caps son's-to affordia etwe'enfthen fprpackings 35 and 36 on said heads 32. ai1d 3' 1, by which it is held in rigid position insaid casing, 28. Said .of l insulating material, "for instance asos or, mineral wool, bearing upon the jacket is conveniently made of a sheet of primarily plane asbestos paper 39 having attached upon one surface a corrugated sheet of such paper 40 and wrapped in an involute coil as shown in. Fig. III. Said rigid water inlet tube 25, which is made of metal, is bent downwardly at its outer end, as shown in Fig. II, for convenient connection with the flexible tube 42, preferably rubber, which extends in connection with 'said drip cock 6, as shown in Fig, I, so that the water from the radiator 1 is directed into said water chamber 24 of the heater. Said rigid water outlet tube 26, which is made of metal, is conveniently provided with the spiral ridge 45, formed by a coil of wire, for engagement with the flexible tube 46, preferably hose formed of rubber reinforced with textile fabric, which extends in connection with the hook nozle 48 through which the water from said chamber 24 is returned to the radiator 1, by way of the inlet tube 5 of the latter on which the heater is hung, by said hook nozle, as shown in Fig. I. Although said hose 46 may be retained in connection with said water outlet tube 26 and nozle 48 by frictional engagementtherewith, I prefer to secure it thereto by the respective screw clamp bands 49 and 50. Moreover, in order to support the heater without strainupon said hose 46, I provide the heater casing 28 with eyes 51 at diametrically opposite sides thereof, in engagement with chains 52 having the common link 53 at their upper ends hung in the bracket plate 54 which is rigidly connected with saidnozle 48.

The apparatus above described may be operated as follows :Ordinarily the radiator drip cock 6 is shut and said apparatus removed from the radiator and the water chamber 24 empty. However, the heater may be instantaneously suspended in operative relation with the radiator by hooking the nozle 48 in the radiator water inlet tube 5, connecting the flexible tube 42 with the drip cock 6, while the latter is closed, and then opening the same so that the water from the radiator flows into the heater and fills the chamber 24 thereof and the water outlet 26 therefrom to the top of the radiator. As the water level in.the heater outlet must rise higher than the water level in the radiator, in order to discharge into the latter, such discharge is effected intermittently, the action being pulsatory; the water in the heater being raised in temperature until a portion thereof is discharged through the nozle 48 simultaneously with the induction of a corresponding quantityof cold water from the radiator; the flow from the nozle 48 ceasing until the temperature is again raised to such a degree as to effect such pulsatory discharge and influx, at a rate determined by the temperature of said resistance coils 8.

The operation of the heater with respect to the radiator 1 may be instantly terminated by closing the radiator drip cock 6, slipping the flexible water inlet tube 42, of the heater, from said cock, and unhooking the nozle 48 from the radiator water inlet tube 5, in which the water contents of the heater maybe emptied if desired; said tube 42 being compressible to prevent leakage of water therefrom or until the apparatus is inverted to thus empty it. Of course, if it is not desired to discharge the hot water from the heater into the radiator when the opera tion aforesaid is terminated, the water may be allowed to drain from the tube 42.

I do not desire to limit myself to the precise details of construction and arrangement herein set forth as it is obvious that various modifications may be made therein without departing-from the essential features of my invention as defined in the appended claims.

I claim 1. A water heater including an electric heating unit having a closed casing and terminals for connection with an energizing circuit; a casing forming a water chamber surrounding said electric'heating unit and having a water'inlet tube near the bottom said tubes being in rigid relation with both of said casings; a flexible water inlet tube extending from said rigid inlet tube; a flexible water outlet tube extending from said rigid outlet tube and having at the upper end thereof a hook shaped nozle; and a flexible mechanical connection between said heater casing-and said hook nozle, of less length than said flexible water outlet tube: whereby said heater is suspended from said hook nozle without strain upon said flexible tube connections.

2. A water heater including an electric heating unit having terminals for connection with an energizing circuit; a casing forming a water chamber surrounding said electric heating unit and having a water inlet tube near the bottom thereof and a water outlet tube at the top thereof; both of said tubes being in rigid relationwith said casing: a flexible water outlet tube extending from said rigid. outlet tube and having at the upper end thereof a hook shaped nozle; and a flexible mechanical connection between said heater casing and said hook nozle. of less length ,than said flexible water outlet tube: whereby said heater is suspended from said hook nozle without strain upon said flexible tube connections.

3. A water heater including an electric heating unit having terminals for connecing from said rigid outlet tube and having at the upper end thereof a hook shaped nozle; whereby said heater is suspended from said hook nozle Without strain upon said flexible tube connections.

4. A water heater including an electric heating unit having terminals for connection with an energizing circuit; a casing forming a water chamber surrounding said electric heating unit and having a water inlet, at the bottom thereof, and a water outlet at the top thereof; and means arranged to maintain a current of water to, through and from said chamber, including a flexible water outlet tube extending from said outlet and having at the upper end thereof a hook shaped nozle whereby said heater may be suspended and through which the water is discharged.

5. A water heater including a, heating unit; a casing forming a water chamber surrounding said unit and having a'water inlet at the bottom thereof and a water outlet at the top thereof; and a water outlet tube leading from said casing outlet and having a hook nozlewhereby said heater may be suspended and through which the water is discharged.

6; Thecombination with a radiator havinga water inlet and a water outlet; of a water heater including a heating unit in a water chamber having a water inlet and a water outlet; means arranged to circulate water in and between said radiator and heater, including a water conduit leading from said'radiator outlet to said heater inlet; a water tube leading from said heater outlet to said radiator inlet; and a hook nozle on said tube whereby said tube is suspended from said radiator and through which the water is directed into said radiatorinlet;

7. The'combination with a radiator having a water, inlet at the top thereof and a water outlet at the bottom thereof; of a water heater detachably connected with said radiator, including a heating unit in a water chamber having a water inlet to the bottom thereof and a water outlet from the top thereof; a water conduit leadin from said radiator outlet to said heater in et; a water tube leading from said heater outlet-to said radiator inlet, and extending above the latter; whereby water from said radiator is caused to circulate through said heater; the flow to and from said radiator being intermittent and puls'atory at a rate predetermined by the temperature of said heating unit.

8. A water heater including a heating unit; a casing forming a water chamber surrounding said unit and having a water inlet and a water outlet; a foraminous cylindrical outer casing shell surrounding said water chamber, in spaced relation therewith; outer caps respectively at the top and bottom of saidshell, holding the latter in rigid concentric relation with said water chamber; inner fiangedheads, respectively at the top and bottom of said shell, in spaced relation with said caps; a cylindrical cellular jacket of heat insulating material extending between said shell and heads, including an involute coil of sheet material having its convolutions in spaced relation, and a corrugated sheet extending between said convolutions; and packings of heat insulating material, between said caps and heads, bearing upon the ends of said jacket and holding the same in rigid relation with said shell.

9. water heater including a heating .unit; a casing forming a water chamber surrounding said unit and having a water inlet and a water outlet; an outer casing shell surrounding said water chamber, in spaced relation therewith; outer caps respectively at the top and bottom of said shell, holding the latter in rigid concentric relation with said water chamber; inner flanged heads, respectively at the top and bottom of said shell, in spaced relation with said caps; a cellular jacket of heat insulating material extending between said shell and heads; and

- =packings of heat insulating material, between said caps and heads, bearing upon the ends of said jacket and holding the same in rigid relation with said shell.

10. A water heater including a heating unit; a casing forming a water chamber surrounding said unit and having a water inlet and a water outlet; an outer casing shell surrounding said water chamber, in spaced relation therewith; outer caps respectively at the top and bottom of said shell, holding the latter in rigid concentric relation with said water chamber; inner flanged heads, respectively at the top and bottom of said shell, in spaced relation with said caps; and a cellular jacket of heat insulating material extending between said shell and heads.

, In testimony whereof, I have hereunto signed my name at Philadelphia, Pennsyl-' vania, this twenty-eighth day of December,

Witnesses:

W. H. KILLE,

E. G. MoCULLoUcH. 

